Now I see the difference: I was using R-devel and that worked as you
expected.
Best,
Uwe Ligges
On 25.07.2011 19:01, Ben Bolker wrote:
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On 07/25/2011 12:55 PM, Uwe Ligges wrote:
On 25.07.2011 17:45, Ben Bolker wrote:
I recently suggested to someone (
http://stackoverflow.com/questions/6789055/r-inconsistency-why-add-t-sometimes-works-and-sometimes-not-in-the-plot-functi/6789098#6789098
) that the should use methods("plot") or methods(class="function") to
locate the documentation on the plot method for objects of class
"function", but they pointed out that these don't actually work.
I can't figure out why not: src/library/graphics/man/curve.Rd contains
the line
\method{plot}{function}(x, y = 0, to = 1, from = y, xlim = NULL, ylab =
NULL, \dots)
and src/library/graphics/DESCRIPTION contains
you mean the following line is in NAMESPACE rather than DESCRIPTION.
S3method(plot, "function")
Yes, sorry.
[presumably the extra quotes are in there because function is a
reserved word?]
I'm not sure where else the information should be. Searching around in
the code tree for information on tail.function (which is listed in the
methods:
methods(class="function")
[1] as.list.function head.function* print.function tail.function*
I find the same S3method syntax, so I guess the quotation marks aren't
the problem ...
?tail.function
tells us this one is from package "utils" and you can search for this
function in the sources of the utils package
Or you could ask for
getAnywhere("tail.function")
and R tells you
A single object matching tail.function was found
It was found in the following places
registered S3 method for tail from namespace utils
namespace:utils
[.....]
Best wishes,
Uwe
Sorry, I didn't frame my question very clearly. I can find
"tail.function" just fine, or I could if I wanted to. What I don't
know is why methods("plot") and methods(class="function") don't list
"plot.function" even though its documentation and setup seem to be
similar to "tail.function", which *does* show up in
methods(class="function") ...
cheers
Ben Bolker
=========
No plot.function listing in either of these ...
library("graphics")
methods("plot")
[1] plot.acf* plot.data.frame* plot.decomposed.ts*
[4] plot.default plot.dendrogram* plot.density
[7] plot.ecdf plot.factor* plot.formula*
[10] plot.hclust* plot.histogram* plot.HoltWinters*
[13] plot.isoreg* plot.lm plot.medpolish*
[16] plot.mlm plot.ppr* plot.prcomp*
[19] plot.princomp* plot.profile.nls* plot.spec
[22] plot.spec.coherency plot.spec.phase plot.stepfun
[25] plot.stl* plot.table* plot.ts
[28] plot.tskernel* plot.TukeyHSD
Non-visible functions are asterisked
methods(class="function")
[1] as.list.function head.function* print.function tail.function*
Non-visible functions are asterisked
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